Penning her frustrations about Marnie's relationship with ex-TOWIE star Lewis Bloor, 27, Sophie wrote in her New! magazine column: 'I've seen pictures of Lewis and Marnie at the airport and I know they're on holiday together.

Blood is thicker than water: Fellow Geordie Shore housemate Marnie Simpson, 25, is also Sophie's cousin, and the two are close friends

'I don't really know what to say about it to be honest.

'I feel like all the advice I give her... if she's not going to listen to me, then she's not going to listen to anyone.

'Of course I'm thinking "why?" like everyone else, but you've got to let her do what she's going to do.'

Marnie and Lewis set off on their travels together in early April after she was pictured supporting him at his charity boxing match where he fought against his fellow Celebrity Big Brother star Heavy D.

Concern: Marnie is in a famously tumultuous on-off relationship with TOWIE's Lewis Bloor, who she met during their stint in the Celebrity Big Brother house in 2016

Lewis was seen planting a kiss on Marnie's cheek as he celebrated his win, while she tweeted on the night: 'Good luck tonight @lewis_bloor regardless of our ups and downs I still want you to win. You'll smash it.'

Sophie herself has had her fair share of ups and downs with her bodybuilder boyfriend Joel Corry, 27, but the couple, who have been together for five years now, are stronger than ever.

The two were pictured looking happy as they cosied up to one another at James Ingham's Jog-On To Cancer charity event on Wednesday.

Stronger than ever: Sophie has been with her bodybuilder boyfriend Joel Corry, 27, for five years now (pictured at the Jog-On To Cancer charity event in London on Wednesday)